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You are here: Home » News » Magnet Industry News » NdFeB rare earth permanent magnet material

NdFeB rare earth permanent magnet material

Views:1     Author:Site Editor     Publish Time: 2015-10-19      Origin:Site

NdFeB rare earth materials are referred to as "the permanent King" appeared in the 1980s, it is a high intensity magnetic and relatively low cost of the permanent magnet material unprecedented reuse in various fields.
(Institute of Physics, academician Wang Zhen West: NdFeB is the third generation of rare earth permanent magnet materials, known as "the permanent King" its tetragonal symmetry crystal structure consists of two neodymium atoms fourteen iron atoms and one boron atoms. It will of nature's most abundant and most spontaneous magnetic iron and enables the fixed combination of magnetic iron in the rare earth neodymium same direction. This combination not only like strong magnetic NdFeB magnets can pick up to 1000 times its own weight iron, and the price is cheaper.)
In 1984, the Chinese Academy of Sciences physics where the West Wang Zhen successfully developed under the auspices of rare earth NdFeB permanent magnets. In order to give full play to the advantages of China's rare earth resources big country, promote the transformation of NdFeB research results, the Chinese government will "high-grade rare earth permanent magnet NdFeB industry" this development-oriented projects included in the National 863 Plan.
863 "high-grade rare earth permanent magnet NdFeB industrialization" of the implementation, which greatly promoted the development of China Sintered NdFeB industry. Our sintered NdFeB magnets from 1985 to 2000 an annual output of 10 tons to 6,500 tons, is now China's output of sintered NdFeB magnets has reached 40% of world production.
Especially 863 results industrial base CAS tricyclic new materials company, the country's largest manufacturer of NdFeB magnets has many high-end products in Japan, Korea, the United Kingdom export, and is developing a number of independent intellectual property rights of high-performance products. 2000 ranking of global NdFeB production enterprises, with an annual output of 2,000 tons tricyclic company ranked third. Now the company is building a high-grade Ke San Huan North and South NdFeB production base, after the completion of the annual output will reach 4,000 tons.
The implementation of 863 projects, while promoting its own development NdFeB industry for many related industries had a positive impact. Element allows the use of rare earth permanent magnet electrical instrumentation and electronic products further reduce the size, performance improved significantly, compliant electronic products light, thin, small demand trends, but also makes the efficiency of the transport vehicles and the permanent members of the mechanical and electrical products, small and lightweight as possible.
For example NdFeB permanent magnets instead of conventional ferrite speaker or alnico magnets, can make speaker weight in the case of reducing the spread of power does not become 2-3 times, but also greatly enhance the sensitivity of the speaker.
The rare earth NdFeB material applied can significantly reduce the weight on the development of various electrical motor, the motor's dimensions can be reduced, and highly efficient energy-saving effect can be obtained and improve the performance of the motor, power electronics combined with new technology, enabling products mechatronics, application and development of the motor plays a significant role. Special TV Institute recently developed at the University of Shenyang 1120 kilowatts permanent magnet motor is currently the world's largest rare earth NdFeB permanent magnet motor, its mechanical power up to 97.5 percent, than it can replace large conventional power level 1-2 motor.
Now rare earth NdFeB material being penetrated into all fields of national economy, small to stereos, cell phones, DVD players, large automotive, electrical and mechanical equipment, magnetic levitation trains, NdFeB permanent magnet materials are showing great prospect.

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